His classmates were labouring with elementary algebra.

他的同学们在绞尽脑汁地演算等代数题。

Let G be an infinite group. If G has a normal elementary abelian subgroup, then G is irrecognizable.

设G是无限群,若G存在等交换子群,则G是不可分辨的.

Based on some basic theorems in theory of numbers this program takes advantage of probabilistic algorithm to test a large number for primality.

基于等数中的一些基本定理,本程序利用概率算法,定一个大数是否为素数。